I have this microwave for 2 years on my jackson.
I think
advantages:
- No parasites,
- Very precise in its saturated
- It really snaps (see too, it is almost unusable in its clear from playing the knob volume of the guitar, but then you lose the momentum ...)

disadvantages:
- A little cold, great for metal, but it's harder to get a rock sound
it gives a synthetic short side for my taste ... but it's a personal opinion.

For a warmer sound, I advice on a mahogany body ^ ^
If you play metal, it is THE mic for you. Accurate, clear and a phenomenal fishing!!

EDIT: Contrary to what is said above, they generate no breath, you just take good knobs and isolate the battery.